| Solution | This camera has three types of AF operation that can be selected to accommodate different shooting conditions and subjects. NOTE - In the Basic Zone modes, the optimum AF operation is set automatically for the respective shooting mode.
Icons used on this page: [  ]: Shooting tab 3 / [  ]: Shooting tab 1 /<   ><   >: Cross keys. / <  >: Setting button * The icons and markings indicating the cameras buttons, dials, and settings correspond to the icons and markings on the camera and on the LCD monitor.
One-Shot AF for Still Subjects Suited for still subjects. When you press the shutter button halfway, the camera will focus only once.  - When focus is achieved, the dot inside the AF point achieving focus lights up briefly in red, and the focus confirmation light in the viewfinder will also light up.
- With evaluative metering the exposure setting will be set at the same time focus is achieved.
- While you hold down the shutter button halfway, the focus will be locked. You can then recompose the shot if desired.
NOTE - If focus cannot be achieved, the focus confirmation light in the viewfinder will blink. If this occurs, the picture cannot be taken even if the shutter button is pressed completely. Recompose the shot and try to focus again, or see "Subjects Difficult to Focus" in the Related information.
- If [ : Beep] is set to [Disable], the beeper will not sound when focus is achieved.
AI Servo AF for Moving Subjects This AF operation is suited for moving subjects when the focusing distance keeps changing. While you hold down the shutter button halfway, the subject will be focused continuously.  - The exposure is set at the moment the picture is taken.
- When the AF point selection is automatic, the camera first uses the center AF point to focus. During autofocusing, if the subject moves away from the center AF point, focus tracking continues as long as the subject is covered by another AF point.
NOTE With AI Servo AF, the beeper will not sound even when focus is achieved. Also, the focus confirmation light in the viewfinder will not light up.
AI Focus AF for Switching the AF Operation Automatically AI Focus AF switches the AF operation from One-Shot AF to AI Servo AF automatically if a still subject starts moving.  After the subject is focused in One-Shot AF, if the subject starts moving, the camera will detect the movement, change the AF operation automatically to AI Servo AF, and keep tracking the moving subject. NOTE When focus is achieved in the AI Focus AF operation with the Servo mode active, the beeper will sound softly. However, the focus confirmation light in the viewfinder will not light up. Note that focus will not be locked in this case.
Changing the Autofocus Operation 1. On the lens, set the focus mode switch to <AF>.  2. Press the < > keys to select the [ ] tab. Press the < > keys to select [AF operation]. Then press < >.   - ONE SHOT: One-Shot AF
- AI FOCUS: AI Focus AF
- AI SERVO: AI Servo AF
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